Train-pipe connection.



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W. A. GREENLAW & R. A. JBWBTT.

TRAIN PIPE CONNECTION.

APPLICATION FILED JAN. 25. 1911.

2 SHEETS-SHEET 1.

g I, .gq I 5'' g e a g Inventors: I of/awa Q 2 Warren/LGreenlaw,

Roberbfi. Jewcbb, by flliy.

Patented Jan. 23, 1912.

W. A. GREENLAW 8: R. A. JEWETT.

TRAIN PIPE CONNECTION.

1 APPLICATION FILED JAN.25.1911.

2 SHEETSSHEET 2.

Warmnjl. Greenlww, Bob erbjL Jeweit,

1,015,435. Patented Jan.23,1912.

1.9 M264MM flay.

' To all whom it may concern:

UNITED I STATES PATENT OFFICE.

WARREN A.. GREENLAW, OF MELROSE, AND ROBERT JEWETT, OF BOSTON, MASSA- CHUSETTS, ASSIGNORS TO THE GREENLAW MANUFACTURING 00., OF BOSTON, 'MAS- SACHUSETTS, A CORPORATION OF MAINE.

TRAIN-PIPE CONNECTION.

Specification of Letters Patent.

Application filed January 25, 1911. SeriaLNo. 604,675.

Be it known that we, WARREN A. GREEN- LAW, a citizen of the United States of America, and a resident of Melrose, in the county of Middlesex and State of Massachusetts, and ROBERT A. J nWET'r, a citizen of the United States of America, and a resident of Boston, in the county of Suiiblk and State of Massachusetts, have invented certain new and useful Improvements in-Train- Pipe Connections, of'which the following is a specification.-

This invention relates to flexible pipe connections and'is particularly adapted for use on certain types of locomotives in which steam passes from one set of cylinders to another set, or from a re-heater to'hhe lowpressure cylinder in a locomotive of the. Mallet type. g

It has for its object the provision of two pipe members, one telescoping into the other, and provided with a -suitable means for packing the joint between said pipe members, andeach provided with a ball end positioned within a pipe section having confined therein spring pressedmembers for packing the joint between said ball ends and the interior of said pipe, sections.

, The invention consists in certain 'novel features of construction and arrangement of parts which can be readily understood by reference to the description of the drawings and to the claims hereinafter given. 7

Of the drawingsi Figure 1 represents a section through a pipe connection embodying the features of the present invention. Fig. 2 represents a section through one of the spring pressed packing followers confined within each pipe section. Fig.3 rep': resents a transverse section,the cutting plane being on line 3 -3 on Fig.1, and Figs. 4 and 5 represent respectively the divided ring upon the outer pipe member and the divided follower ring upon the inner pipe member. Figs. 2 and 3 are drawn to an enlarged scale.

Similar characters designate like parts throughout. the several figures of the drawmgs. p

In the drawings, 10 represents a pipe member provided at one end with a ball portion 11, and at its opposite end with an enlarged cylindrical portion 12 adapted to receive the ipe member 13, having at 'its opposite end a ball portion 14. The end 12 is provided with a-cup-shaped portion 14* conring 17 having a plurality of openings therein in which are mounted the headed bolts 18, the heads-19 of which are square and are positioned within square pockets in the ring 17 and are prevented thereby from turning. These bolts 18' extend through a plurality of openings in the follower ring 20, which is provided with'an annular flange 21 bearingagainst the packing 15. The threaded ends of the bolts 18 have mounted thereon the nuts22, by which the annular flange 21 may be forced sufiiciently hard against the packing 15 as to thoroughly pack the jointbetween the two pipe members 10 and 13. The extreme outer ends of the bolts 18 are provided with cotter pins or other lateral members 23 which prevent the nuts 22. from accidental separation from said bolts. By this construction the pipe member 13 is permitted to move lengthwise of the pipe member 10 and allow for expansion and contraction of the two pipe members, or for j ars and rocking incident to the rapid running of the'locomotive.

Each of the'ball members 11 and 14 is positioned within the cu -shaped end 25 of a pipe section 26. At t e bottom of each cup-shaped end 25 is positioned a metal ring 27,, upon which is superimposed the packing'members'28 and 29, the packing member 29 .in turn having positioned thereon a smaller ring3 1. The ring 31 is also pro vided with a plurality of other pins 35.extendingintotubular members 36 formed'on or secured to the ring 34. Each tubular member 36 is provided with a slot 37 into which extends a projection 38 upon the pin 35, the objeot of these projections 38 being to prevent the separation of the two rings 31 and 34 when removed from the cup shaped ends 25. Helical springs 39 are adapted to nonnallyseparate the rings 31 and 34,'but owing to the connections between the pins 35 and the tubular member 36, the tapered pins 32 are always in alineinent with the openings 33 I through the ring 34. This makes a very convenient form of spring pressed packing follower, Which is incapable of becoming dismembered when removed from the pipe sections 26.

Bearing against the end face of-the-ring 34 is a metal ring 40 normally resting against a packing ring 41; within an annularmember 42, closing the outer end of the cup-shaped end 25. This annular member 42 is held in position by means of the end plate 43 secured to the cup-shaped end 25 of the pipe section 26 bymeans of the bolts 44 and nuts 45. The entire diameter of the ring 31 is such as to permit this ring to pass over the greatest diameter of the ball end 11 or 14. When the various members are to be installed, the

rings 27 and 30, with the packing members 28 and 29 interposed between them are placed within suitable seats at the inner end of the cup-shaped member 25. The spring pressed followers 31 and 34 are then inserted within the cup-shaped end 25, passing'over the smaller endsof the pipe mem-. bers l0 and 13- respectively. The annular member 42 with the packing 41 seated therein, and covered by the ring is then simiv larly' inserted within the cup-shaped memher 25 and the closing plate 43, passed over the smaller ends of the pipe members 10 and 13, is secured to the cup-shaped end 25. The springs 39 will now act upon the rings 31 and 34 to separate them and force the packing members 28,.29, and'41 into firm contact with the periphery of the ball ends 11 and '14, thereby effectively packing the joint between the pipe sections 26 and said ball ends, thus preventing any leakage of steam or other fluid from the complete pipe connection. When these various members have been positioned in the order mentioned, the pipe, member 13 is inserted within the enlarged end 12 of the pipe member 10 and the rings 17 and 20 are placed in position and locked together by means of the bolts 18 and the nuts 22 threaded-thereto, the annular flange 21 being pressed firmly into contact with the packing 15 so as to force it into contact with the periphery of the pipe member .13 and effectively pack the joint between the two telescoping pipe members; In order to place these rings 17 and 20 upon the pipe members 10 and 13 after the ball ends thereof have been inserted in two pipe members are adapted to telescope to allow for contraction and expansion of the metal when in use, and to further permit one pipe member to slip on the other when the various elements are jarred or rocked by the travel of the locomotive. Moreover, the ball portions on the ends of said pipe members are so ositioned within the cup-shaped portions t at the pipe secend; a pipe section provided with a cupshaped end adapted to receive said ball; annular packing members in said cup-shaped end; and means interposed between said packing members adapted to force them into contact with the surface of said ball.

' 2. In a device of the class described, the combination of a pipe member having a ball-end; a pipe sectiomprovided with a cup-shaped end adapted to receive said ball; annular packing members in said cup shaped end; and a'spring pressed separator interposed between said packing members adapted to force them into contact with the surface of said ball. 3. In a device of the class described, the combination of a pipe member having a ball end; a pipe section provided with a cupshaped end adapted to receive said ball; ans nular packing members in said cup-shaped end; and a spring pressed separator interposed between said packing members adapted to force them into contact with the surface of said ball; said separator including means to prevent the complete separation thereof when. removed from said cup-shaped end. a

4. In adevice of the class described, the combination of a pipe member having a ball end; a pipe section provided with a cupshaped end adapted to receive said ball; an nular packing members in said cup-shaped end; rings bearing against said packing members; centering pins on one ring extending through openings in' the other; and springs surrounding said pins.

5. In a device of the class described, the combination of a pipe member having a ball end; a pipe section provided with a cupshaped endadapted to receive said ball; annular packing members in said cup-shaped end; rings b'earing against said packing members; centering pins on one ring extending through openings in the other; springs surrounding said pins; a pair of tubular members on one-of said rings; male members on the other ring extending into said tubular members; and means for limiting the movement of said male members in said tubular members. 1

6. In a device of the class described, the combination of a pipe member having a ball end; a pipe section provided with a cup-' shaped end adapted to receive said ball; 'annular packing members in said cup-shaped end; rings bearing against said packing members; centering pins on one ring extending through openings in the other; springs for limiting the movement of said male members in said tubular members.

Signed by us at 4 Post Ofiice Sq., Boston, Mass, this 24th day of January, 1911.

WARREN A. GREENLAW. ROBERT A. JEWETT. 1

Witnesses:

NATHAN'C. LoMBARD, MARY 0. SMITH. 

